Here's the basic information.
I wanted to study this because I play so much music I didn't write, and while folks appreciate it when you Nail a popular synth solo, I miss playing originals.
I will keep doing it though because I am known for certain things and it is a living, but when I can play something while I am checking out babes and not even look at the keys or foot pedals, it's time to " Seek eversion elsewhere, on the Island. " ( Han..from the movie Enter The Dragon MGM 1972 ).
To keep from becoming a burned out robot, this is the ticket for me.
http://www.equalinterval.com/
http://www.jazzwax.com/
The Hanon excercises are awesome for building confidence and dexterity.
I have the books from 1970 still. PDF's are much easier for practicing.
In all honesty, these excercizes are harder on a plastic keyed controller.
Using the real keybed of an Upright will build strength too.
But set the velocity on your controller so the the MIDI Velocity numbers 100-127 must be triggered to hear audio. There should be 4 curves ( standard ) on your controller.
Cheers.